Fire-extinguisher.



PATENTED AUG. 25, 1908.

E. T. ROBINSON. FIRE EXTINGUISHER.

APPLICATION FILED MAR.16,1908

n l F J I I 1 Li a I r i1 4 I WNW! H i l M M M w w I 1 W l l l V I w m MP EsusEgE m i w x Q s w Q m a: "Z ZZZ0Z&'7*ZJ0%,

' dig.

EARLE T. ROBINSON, OF ST. LOUIS, MISSOURI.

FIRE-EXTINGUISHER.

Specification of Letters Patent.

Patented Aug. 25, 1908.

Application filed March 16, 1908. I Serial No. 421,517.

To all whom it may concern:

Be it known that I, EARLE T. ROBINSON, a citizen of the United States ofAmerica, residing in the city of St. Louis, in the State of Missouri,have invented certain new and useful Improvements in Fire-Extinguishers,of which the following is a full, clear, and exact description,reference being had to the accompanying drawing, forming part of thisspecification.

My invention relates to that character of chemical fire extinguishers inwhich the essential features are a rotatable, or partly rotatable,cylinder for the reception of water, means for supporting an acidcontaining receptacle from which acid is discharged into the water inthe cylinder, when said cylinder is partly rotated to provide for theproduction of a gas, means for the escape of the fire extinguishingfluid from the cylinder, and means whereby the fluid may be agitatedbefore it escapes from the cylinder.

My invention has for its object the production of a fire extinguishercontaining the essential features stated Which, While con taining all ofthe merits of more complicated extinguishers, is of marked simplicity.

The drawing is a longitudinal section taken through my fireextinguisher.

In the accompanying drawings: 1 and 2 designate supports that preferablyconstitute portions of a truck by which my extinguisher is carried.

3 designates a horizontal cylinder that is provided at one end with animperforate trunnion 4 mounted in the support 2 and at the other endwith a hollow trunnion 6 mounted in the support 1. The trunnions 4 and 6provide for the rotation of the cylinder 3, in order that it may betilted.

7 is hand wheel fixed to the hollow extension 6 of the hollow trunnion 6and by which the cylinder is turned to tilt it.

At the outer head of the cylinder 3, and extending from the inner end ofthe hollow trunnion 6, is a hollow neck 8 to the extremity of which isattached an inner elbow coupling or union 9 provided with an innerstuffing box 10 in a line with the hollow neck and having utilityto bementioned.

11 is a radial discharge pipe fitted to the coupling 9 and extendingtransversely of the cylinder 3. This discharge pipe is adapted toreceive the fluid in the cylinder when the cylinder is tilted to carrythe pipe from an upright position to an inverted position, in

order that the fluid may be discharged from the cylinder into the hollowneck 8 and the hollow trunnion 6.

12 is a radial escape pipe for the fluid which is placed incommunication with the hollow trunnion 6. This pipe 12 is attached to anouter elbow coupling 13, in which is seated a connecting pipe 14 that isloosely fitted to the outer end of the hollow extension 6 of the hollowtrunnion 6 and is held to the trunnion extension 6 by a gland 15 whichin turn is secured by a collar 15 connected with the hollow trunnionextension 6 The loose connection of the escape pipe 12 to the hollowtrunnion extension 6 of the hollow trunnion 6, which has just beendescribed, provides for the rotation of said trunnion and its extensionand the cylinder of my extinguisher without affecting the said escapepipe or the movement of the es cape pipe, without any effect upon thecylinder.

16, designates a radially arranged bottle holder attached to the wall ofthe cylinder 3, and 17 is an acid receiving bottle supported by saidholder, and from which the contents is adapted to be discharged into thecylinder and into water therein, when the cylinder is tilted to invertthe bottle and also the discharge pipe 11 is tilted to submerge it intothe water in order that the water may be impregnated with the acid, andgas produced in the cylinder to force the fluid through the dischargepipe 11, through the connections leading to the escape pipe 12, andthrough said escape pipe.

To provide for the agitation of the water and acid in the cylinder, Iutilize an agitator which comprises a shaft 18 that is j ournaled at itsouter end in and extends longitudinally through an outer stuffing box 13carried by said outer elbow coupling, and through the latter, throughthe hollow trunnion 6, through the inner elbow coupling 9, and its innerstuffing box 10 and into the cylinder 3. The inner end of this shaft isjournaled in a cross bar 19 that is transversely arranged in thecylinder. The shaft 18 is adapted to be rotated by a hand wheel 20, andit is equipped within the cylinder with mixer blades or arms 21.

I claim 1. A chemical fire extinguisher comprising a horizontal cylinderhaving a trunnion, at one end, and a hollow trunnion formed with ahollow neck and a hollow extension at the other end, a radial dischargepipe connected with the hollow neck, a radial escape pipe with which thehollow trunnion extension is loosely coupled, and an agitator having anone end, and a hollow trunnion formed with a hollow neck and a hollowextension, at the other end, a radial discharge pipe, an elbow couplingconnecting the radial discharge pipe with the hollow neck, a radialescape pipe an elbow coupling connected with the radial escape pipe andwith which the trunnion extension is loosely coupled, and an agitatorhaving an operating shaft extending through the discharge pipe elbowcouplin through c the hollow neck, through the ho low trunnion, throughthe trunnion extension and through the escape pipe elbow coupling.

3. A chemical fire extinguisher comprising a horizontal cylinder, havinga trunnion, at

" one end, and a hollow trunnion formed with a hollow neck and a hollowextension, at the other end, a radial discharge pipe connected with thehollow neck, a connecting pipe with which the hollow trunnion extensionis loosely coupled, a radial escape pipe with which the connecting pipeis coupled, and an agitator, having an operating shaft extending throughthe juncture of the radial discharge pipe with the hollow neck, throughthe latter, through the hollow trunnion, through the trunnion extension,through the connecting pipe and through the juncture of the trunnionextension with the radial escape pipe.

4. A chemical fire extinguisher comprising a horizontal cylinder havinga trunnion, at one end, and a hollow trunnion formed with a hollow neckand a hollow extension, at the other end, a radial discharge pipe, anelbow coupling connecting the radial discharge pipe with the hollowneck, a connecting pipe with which the hollow trunnion extension isloosely coupled, a radial escape pipe, an elbow coupling connected withthe radial escape pipe and with which the connecting pipe is coupled,and an agitator having an operating shaft extending through thedischarge pipe elbow coupling, through the hollow neck, through thehollow trunnion, through the trunnion extension, through the connectingipe and through the escape pipe elbow coup ing.

EARLE T. ROBINSON. In the presence of LILY RosT, H. G. 000K.

